Pump, Primer, Rotary : A priming device in which a rotor, fitted with a number of blades carried in slots, is fitted eccentrically in a casing and extracts air from the suction and pump casing by positive displacement
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}